Systems and techniques for measuring and reporting network calibration parameters

Abstract

Disclosed are methods, systems, and computer-readable medium to perform operations including: measuring a first Channel State Information Reference Signal (CSI-RS) received from a first transmission reception point (TRP) of a plurality of TRPs; measuring a second CSI-RS received from a second TRP of the plurality of TRPs; determining a time delay and a frequency offset between the first TRP and the second TRP based on the first CSI-RS and the second CSI-RS; and generating a calibration report including the determined time delay and the determined frequency offset for transmission to the first TRP and the second TRP.

1 . A method comprising:
 measuring a first Channel State Information Reference Signal (CSI-RS) received from a first transmission reception point (TRP) of a plurality of TRPs;   measuring a second CSI-RS received from a second TRP of the plurality of TRPs;   determining a time delay and a frequency offset between the first TRP and the second TRP based on the first CSI-RS and the second CSI-RS; and   generating a calibration report comprising the determined time delay and the determined frequency offset for transmission to the first TRP and the second TRP.   
     
     
         2 . The method of  claim 1 , wherein at least one of:
 the first CSI-RS is received from a first pre-determined CSI-RS port associated with the first TRP, or   the second CSI-RS is received from a second pre-determined CSI-RS port associated with the second TRP.   
     
     
         3 . The method of  claim 1 , wherein at least one of:
 the first CSI-RS is received from a first CSI-RS port associated with the first TRP, wherein the first CSI-RS port is selected from among a first plurality of ports associated with the first TRP based on signal-to-noise ratios (SNRs) of the first plurality of ports, or   the second CSI-RS is received from a second CSI-RS port associated with the second TRP, wherein the second CSI-RS port is selected from among a second plurality of ports associated with the second TRP based on SNRs of the second plurality of ports.   
     
     
         4 . The method of  claim 3 , wherein at least one of:
 the first CSI-RS port is selected based on a first layer indicator (LI) indicating that the first CSI-RS has the highest SNR from among the first plurality of ports, or   the second CSI-RS port is selected based on a second LI indicating that the second CSI-RS has the highest SNR from among the second plurality of ports.   
     
     
         5 . The method of  claim 1 , wherein at least one of:
 the first CSI-RS is received periodically according to at least one of a first pre-determined periodicity or a first pre-determined offset associated with the first TRP, or   the second CSI-RS is received periodically according to at least one of a second pre-determined periodicity or a second pre-determined offset associated with the second TRP.   
     
     
         6 . The method of  claim 1 , wherein at least one of:
 the first CSI-RS is received aperiodically according to a first plurality of slots associated with a first set of frequencies, or   the second CSI-RS is received aperiodically according to a second plurality of slots associated with a second set of frequencies.   
     
     
         7 . The method of  claim 1 , wherein at least one of:
 the first CSI-RS is a first Tracking Reference Signal (TRS) associated with the first TRP, or   the second CSI-RS is a second TRS associated with the second TRP.   
     
     
         8 . The method of  claim 1 , wherein the first CSI-RS is received from a first CSI-RS port associated with the first TRP, the first CSI-RS being configured based on a first Channel Measurement Resource (CMR) received from the first TRP, and
 wherein the second CSI-RS is received from a second CSI-RS port associated with the second TRP, the second CSI-RS being configured based on a second CMR received from the second TRP, and   wherein at least one of:
 the first CMR and the second CMR are received during a common Connected Mode Discontinuous Reception (CDRX) On-Duration, or 
 the first CMR is associated with a first phase, wherein the second CMR is associated with a second phase, and wherein the first phase and the second phase are continuous. 
   
     
     
         9 . (canceled) 
     
     
         10 . (canceled) 
     
     
         11 . The method of  claim 1 , wherein determining the time delay and the frequency offset between the first TRP and the second TRP comprises:
 selecting one of the first TRP or the second TRP as a reference TRP,   selecting the other one of the first TRP and the second TRP as a secondary TRP,   determining a time delay of the secondary TRP relative to the reference TRP, and   determining a frequency offset of the secondary TRP relative to the reference TRP,   wherein at least one of:
 the reference TRP is indicated by a network configuration, or 
 the reference TRP is selected absent a network configuration indicating the reference TRP. 
   
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . The method of  claim 1 , wherein the calibration report is a standalone report. 
     
     
         15 . The method of  claim 1 , wherein the calibration report further comprises at least one of:
 a Layer 1 Signal to Interference plus Noise Ratio (L1-SINR) measurement, or   a Time-Domain Channel Property (TDCP) measurement.   
     
     
         16 . The method of  claim 1 , further comprising at least one of:
 causing the calibration report to be transmitted periodically using a Physical Uplink Control Channel (PUCCH),   causing the calibration report to be transmitted semi-persistently using the PUCCH, or   causing the calibration report to be transmitted semi-persistently using a Physical Uplink Shared Channel (PUSCH).   
     
     
         17 . The method of  claim 16 , wherein at least one of:
 a periodicity and an offset of the transmission of the calibration report is network configured, or   a periodicity and an offset of the transmission of the calibration report is aligned with a Discontinuous Reception (DRX) cycle and an On Duration associated with the DRX cycle.   
     
     
         18 . (canceled) 
     
     
         19 . The method of  claim 1 , wherein the calibration report is generated for aperiodic transmission using a Physical Uplink Shared Channel (PUSCH). 
     
     
         20 . The method of  claim 1 , further comprising:
 determining a first priority associated with the calibration report,   determining a second priority associated with a second report, and   determining whether to refrain from transmitting the calibration report or the second report based on a comparison of the first priority and the second priority.   
     
     
         21 . The method of  claim 20 , further comprising:
 determining that the second priority is lower than the first priority, and   refraining from transmitting the second report.   
     
     
         22 . The method of  claim 20 , wherein at least one of:
 (i) the second report comprises at least one of a Layer 1 Signal to Interference plus Noise Ratio (L1-SINR) measurement or a Layer 1 Reference Signal Received Power (L1-RSRP) measurement, and wherein the first priority is equal to the second priority,   (ii) the second report does not include a Layer 1 Signal to Interference plus Noise Ratio (L1-SINR) measurement or a Layer 1 Reference Signal Received Power (L1-RSRP) measurement, and wherein the first priority is equal to the second priority, or   (iii) the first report is a standalone time delay and frequency offset report, and wherein the first priority is lower than the second priority.   
     
     
         23 . (canceled) 
     
     
         24 . (canceled) 
     
     
         25 . (canceled) 
     
     
         26 . (canceled) 
     
     
         27 . An apparatus comprising processing circuitry configured to perform operations comprising:
 measuring a first Channel State Information Reference Signal (CSI-RS) received from a first transmission reception point (TRP) of a plurality of TRPs;   measuring a second CSI-RS received from a second TRP of the plurality of TRPs;   determining a time delay and a frequency offset between the first TRP and the second TRP based on the first CSI-RS and the second CSI-RS; and   generating a calibration report comprising the determined time delay and the determined frequency offset for transmission to the first TRP and the second TRP.   
     
     
         28 . One or more baseband processors configured to perform operations comprising:
 measuring a first Channel State Information Reference Signal (CSI-RS) received from a first transmission reception point (TRP) of a plurality of TRPs;   measuring a second CSI-RS received from a second TRP of the plurality of TRPs;   determining a time delay and a frequency offset between the first TRP and the second TRP based on the first CSI-RS and the second CSI-RS; and   generating a calibration report comprising the determined time delay and the determined frequency offset for transmission to the first TRP and the second TRP.